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Date: Tue, 20 Nov 2018 21:31:31 +0100
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Heiner Kallweit <hkallweit1@...il.com>,
Andrew Lunn <andrew@...n.ch>
Cc: Realtek linux nic maintainers <nic_swsd@...ltek.com>,
"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: Realtek NIC uses over 1 Watt with no traffic
Dear Heiner,
Thank you for your reply.
Am 20.11.18 um 21:14 schrieb Heiner Kallweit:
> On 20.11.2018 15:45, Andrew Lunn wrote:
>> On Tue, Nov 20, 2018 at 09:40:25AM +0100, Paul Menzel wrote:
>>> Using Ubuntu 18.10, Linux 4.18.0-11-generic, PowerTOP 2.9 shows, the NIC
>>> uses 1.77 Watts. A network cable is plugged in, but there is no real traffic
>>> according to `iftop`. Only an email program is running.
>>>
>>> $ lspci -nn -s 3:00.1
>>> 03:00.1 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
>>> RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev
>>> 12)
>>>
>>> Is that a measurement error, or does the NIC really need that much power?
>> This sounds like Energy Efficient Ethernet, EEE, is not enabled.
>>
>> What does ethtool --show-eee ethX say?
$ sudo ethtool --show-eee enp3s0f1
Cannot get EEE settings: Operation not supported
> The r8169 driver doesn't support the get_eee ethtool_ops callback.
> For certain chip versions EEE gets enabled in the PHY init, for others
> not and some don't seem to support EEE at all.
>
> Apart from EEE one important factor affecting power consumption is ASPM.
> This was recently enabled for certain chip versions.
>
> Information that would help:
>
> whether Wake-on-LAN is enabled ("Wake-on:" line from ethtool output)
```
$ sudo ethtool enp3s0f1
Settings for enp3s0f1:
Supported ports: [ TP AUI BNC MII FIBRE ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Link partner advertised pause frame use: Symmetric
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000033 (51)
drv probe ifdown ifup
Link detected: yes
```
So, it’s enabled (g Wake on MagicPacket(tm)).
Running `sudo ethtool -s enp3s0f1 wol d;` doesn’t change anything though.
> lspci -vv output for the Realtek NIC
Here is the output (quoted, so that Thunderbird does not wrap the line).
> $ sudo lspci -vv -s 3:00.1
> 03:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12)
> Subsystem: CLEVO/KAPOK Computer RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
> Latency: 0, Cache Line Size: 64 bytes
> Interrupt: pin A routed to IRQ 19
> Region 0: I/O ports at e000 [size=256]
> Region 2: Memory at df114000 (64-bit, non-prefetchable) [size=4K]
> Region 4: Memory at df110000 (64-bit, non-prefetchable) [size=16K]
> Capabilities: [40] Power Management version 3
> Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
> Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
> Address: 0000000000000000 Data: 0000
> Capabilities: [70] Express (v2) Endpoint, MSI 01
> DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
> ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset- SlotPowerLimit 10.000W
> DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
> RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
> MaxPayload 128 bytes, MaxReadReq 4096 bytes
> DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
> LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
> ClockPM+ Surprise- LLActRep- BwNot- ASPMOptComp+
> LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- CommClk+
> ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
> LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
> DevCap2: Completion Timeout: Range ABCD, TimeoutDis+, LTR+, OBFF Via message/WAKE#
> DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
> LnkSta2: Current De-emphasis Level: -6dB, EqualizationComplete-, EqualizationPhase1-
> EqualizationPhase2-, EqualizationPhase3-, LinkEqualizationRequest-
> Capabilities: [b0] MSI-X: Enable+ Count=4 Masked-
> Vector table: BAR=4 offset=00000000
> PBA: BAR=4 offset=00000800
> Capabilities: [d0] Vital Product Data
> pcilib: sysfs_read_vpd: read failed: Input/output error
> Not readable
> Capabilities: [100 v2] Advanced Error Reporting
> UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
> UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
> UESvrt: DLP+ SDES+ TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
> CESta: RxErr+ BadTLP+ BadDLLP+ Rollover- Timeout+ NonFatalErr+
> CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
> AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
> Capabilities: [160 v1] Device Serial Number 01-00-00-00-68-4c-e0-00
> Capabilities: [170 v1] Latency Tolerance Reporting
> Max snoop latency: 3145728ns
> Max no snoop latency: 3145728ns
> Capabilities: [178 v1] L1 PM Substates
> L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+
> PortCommonModeRestoreTime=150us PortTPowerOnTime=150us
> L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1-
> T_CommonMode=0us LTR1.2_Threshold=0ns
> L1SubCtl2: T_PwrOn=10us
> Kernel driver in use: r8169
> Kernel modules: r8169
Some Active State Power Management levels seem to be enabled.
> Info from powertop about package C states. With ASPM my system reaches
> 50% PC7 + 50% PC10.
That seems to be the case on my TUXEDO Book BU1406 too.
> Paket | Kern | CPU 0 CPU 2
> | | C0 aktiv 1,7% 1,1%
> | | POLL 0,0% 0,0 ms 0,0% 0,0 ms
> | | C1E 0,2% 0,8 ms 0,1% 0,2 ms
> C2 (pc2) 5,2% | |
> C3 (pc3) 82,1% | C3 (cc3) 0,0% | C3 0,0% 0,2 ms 0,1% 0,2 ms
> C6 (pc6) 0,0% | C6 (cc6) 1,3% | C6 0,8% 0,5 ms 1,4% 0,6 ms
> C7 (pc7) 0,0% | C7 (cc7) 90,8% | C7s 0,0% 1,6 ms 0,0% 0,0 ms
> C8 (pc8) 0,0% | | C8 6,0% 1,8 ms 10,1% 2,0 ms
> C9 (pc9) 0,0% | | C9 0,2% 2,8 ms 0,2% 2,9 ms
> C10 (pc10) 0,0% | | C10 88,7% 12,7 ms 84,4% 14,9 ms
>
> | Kern | CPU 1 CPU 3
> | | C0 aktiv 1,0% 0,8%
> | | POLL 0,0% 0,0 ms 0,0% 0,0 ms
> | | C1E 0,1% 0,3 ms 0,1% 0,3 ms
> | |
> | C3 (cc3) 0,0% | C3 0,0% 0,2 ms 0,0% 0,2 ms
> | C6 (cc6) 1,1% | C6 0,9% 0,6 ms 0,8% 0,5 ms
> | C7 (cc7) 92,2% | C7s 0,0% 1,7 ms 0,0% 0,0 ms
> | | C8 6,2% 1,7 ms 5,4% 1,7 ms
> | | C9 0,3% 1,7 ms 0,1% 1,9 ms
> | | C10 88,8% 12,1 ms 90,7% 14,8 ms
>
> | GPU |
> | |
> | Powered On 2,2% |
> | RC6 97,8% |
> | RC6p 0,0% |
> | RC6pp 0,0% |
> dmesg output filtered for "r8169". Primarily relevant is the line with
> the chip name and XID.
Please find them below.
> $ sudo dmesg | grep r8169
> [ 5.318442] calling rtl8169_pci_driver_init+0x0/0x1000 [r8169] @ 418
> [ 5.318470] r8169 0000:03:00.1: enabling device (0000 -> 0003)
> [ 5.340324] libphy: r8169: probed
> [ 5.340630] r8169 0000:03:00.1 eth0: RTL8411, 80:fa:5b:3b:dd:f0, XID 5c800800, IRQ 136
> [ 5.340632] r8169 0000:03:00.1 eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko]
> [ 5.340673] initcall rtl8169_pci_driver_init+0x0/0x1000 [r8169] returned 0 after 9217 usecs
> [ 5.799967] r8169 0000:03:00.1 enp3s0f1: renamed from eth0
> [ 10.036968] Generic PHY r8169-301:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=r8169-301:00, irq=IGNORE)
> [ 676.940934] calling rtl8169_pci_driver_init+0x0/0x1000 [r8169] @ 22235
> [ 676.952411] libphy: r8169: probed
> [ 676.952701] r8169 0000:03:00.1 eth0: RTL8411, 80:fa:5b:3b:dd:f0, XID 5c800800, IRQ 139
> [ 676.952702] r8169 0000:03:00.1 eth0: jumbo features [frames: 9200 bytes, tx checksumming: ko]
> [ 676.952736] initcall rtl8169_pci_driver_init+0x0/0x1000 [r8169] returned 0 after 11518 usecs
> [ 676.954420] r8169 0000:03:00.1 enp3s0f1: renamed from eth0
> [ 676.975161] Generic PHY r8169-301:00: attached PHY driver [Generic PHY] (mii_bus:phy_addr=r8169-301:00, irq=IGNORE)
> [ 680.518923] r8169 0000:03:00.1 enp3s0f1: Link is Up - 1Gbps/Full - flow control rx/tx
> [ 1751.285899] r8169 0000:03:00.1: invalid short VPD tag 00 at offset 1
Kind regards,
Paul
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